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After Internet routing was shown in a number of classic measurement papers to result in paths that are sub-optimal with respect to a number of metrics, routing overlays were proposed as a method for improving performance, without the need to re-engineer the underlying network. In this paper, we present SMART, a self-healing, self-optimizing and highly scalable routing overlay, which has a number of...
In the paper we improve QoS (Quality of Service) in the swarm of micro UAVs (Unmanned Aerial Vehicles) connected by 802.11n standard and AODV routing protocol using peer selection algorithm that is implemented at the application layer of OSI model. We compare contention-based, greedy and predictive approaches to peer selection in FANET based on Packet Delivery Ratio (PDR) in source-destination transmission...
In this paper, we present novel approaches to routing in tactical networks. We combine recent advances in OLSR development regarding modularization, scalability, extensibility, and metrics with a node architecture concept based on radio and router separation adopted to tactical networks. This node architecture consists of a single router with several external radios acting as wireless bridges and...
For some computer to find another in a network, there is a routing mechanism which describes how information is transferred between network nodes. The route is understood as sequence of network nodes through which it is possible to transmit information from source node to destination node. One of perspective methods of a computer network reliability increase is ensuring fast restoration of routes...
This paper describes the performance enhancements of the routing mechanism for mobile ad-hoc networks. The presented solution is based on the proactive Optimized Link State Routing (OLSR) protocol. A new method was introduced to calculate the node performance metric with respect to the local resources, i.e., the battery level and the available bandwidth. This metric is reflected by the Willingness...
Wireless machine-to-machine (M2M) communications are widely considered as part of the Internet of Things (IoT) infrastructure. Resource management is crucial for heterogeneous M2M networks. In this paper, we present new distributed sleep management techniques to prolong network lifetime for multi-hop heterogeneous wireless M2M networks, which consist of battery-powered nodes and mains-powered nodes...
Vehicular Ad hoc Network (VANET) is emerging as a new technology to support safety, entertainment, and traffic efficiency applications in smart transportation systems. Since VANET is a subclass of Mobile Ad hoc Network (MANET), performance of MANET routing protocols when applied to VANET have been studied extensively during the last years. One of the most interesting areas is applying geographic routing...
Mobile Ad hoc Networks (MANETs) represent complex distributed systems that do not rely on any infrastructure or centralized administration. These networks consist of wireless mobile devices which communicate with each other over the wireless channel. Because each mobile node (MN) has a limited transmission range, multi-hop communication is necessary to deliver data across the entire network. Such...
Vehicular Ad Hoc Network (VANET) is a subgroup of mobile ad hoc network (MANET). It is an emerging new technology to exchange information between vehicles to vehicles. VANETs are considered as one of the most noticeable technologies for improving the efficiency and safety of transportation systems. VANET mainly used to exchange traffic information between the vehicles and prevent accident. In VANETs...
In an Opportunistic Network (Oppnet), the transmission of messages between mobile devices is achieved in a store-carry-and-forward fashion since nodes store the incoming messages in their buffer and wait until a suitable next hop node is encountered that can carry the message closer to the destination. In such environment, due to the delay-tolerant nature of the network, designing a routing protocol...
The Routing Protocol for Low power and lossy network (RPL) is recommended by Internet Engineering Task force (IETF) for IPv6 based Low Power Personal Area Network (6LoWPAN). RPL is a proactive routing protocol for Internet of Things (IoT) that has applications in smart homes, smart cities and smart world. RPL creates a Directed Acyclic Graph (DAG) of the network topology. Rank in a primitive construct...
One of the main considerations in designing routing protocols for Mobile Ad-Hoc Network (MANET) is to increase network lifetime by minimizing nodes' energy consumption, since nodes are typically battery powered. Many proposals have been addressed to this problem; however, few papers consider a proactive protocol like Optimized Link State Routing Protocol (OLSR) to better manage the energy consumption...
In MANETs, real-time multimedia applications make Quality of Service (QoS) support, a crucial issue regarding terms of increased throughput, reduced jitter and available bandwidth. The highly dynamic topology of the network, large variation of received signal strength at nodes and frequently varying link characteristics make QoS provisioning, a challenging task. Most of the existing routing protocols...
Low power and lossy networks (LLNs) consist of devices having limited battery power, less memory, reduced processing capability. RPL (Routing Protocol for low power and Lossy networks), is an approved Internet Engineering Task Force (IETF) standard routing protocol for IPv6-based LLNs. RPL uses a proactive routing approach and the sink or controller node within the network creates a Directed Acyclic...
Clustering is a widely used solution to provide routing scalability in wireless ad hoc networks. The design of clustering schemes is a complex problem due to the dynamic nature of this type of networks. This work proposes a Social-aware Clustering Scheme (SoCS) based on link history to improve the performance of clustering management operations. Each node maintains a history of past links with neighbour...
Mobility is the most issues for the majority ofprotocols including the RPL (IPv6 Routing Protocol for LowPower and Lossy Networks). RPL a routing protocolstandardized by IETF is usually used in Internet of ThingsTechnology. It is proposed to support communications in Lowpower and Lossy Networks (LLNs). However, mobility limitsthe use of RPL protocol in realistic study. In this paper wehave classify...
Due to the opportunities provided by the Internet, people are taking advantage of e-learning courses and during the last few years enormous research efforts have been dedicated to the development of e-learning systems. So far, many e-learning systems are proposed and used practically. However, in these systems the e-learning completion rate is low. One of the reasons is the low study desire and motivation...
Nowadays Wireless Sensor Networks have attractedworldwide research and industrial interest, because theycan be applied in various areas. Geographic routingprotocols are very suitable to wireless sensor networksbecause they use location information when they need toroute packets. Obviously, location information ismaintained by Location-Based Services provided bynetwork nodes in a distributed way. The...
Underwater Acoustic Sensor Networks are considered to provide efficient monitoring tasks in aquatic environment but due to limited battery resource of sensor nodes, network lifetime collapses. Energy balancing is the major issue in low network lifetime. High energy consumption creates energy holes and ultimately leads to shorter network lifetime. Therefore, energy consumption must be balanced to increase...
MANET is a collection of mobile devices with a dynamically changing network topology and is devoid of any fixed infrastructure. Due to dynamic network topology, the links may appear and disappear at any time. Traditional routing protocols uses minimum hopcount as the path selection metric. However, this choice may result in long weak or low-quality links. So, defining a suitable link-metric for wireless...
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